Dishwashing apparatus with conical spray device means

Claim 1

DISHWASHING APPARATUS COMPRISING, IN COMBINATION: (A) AN ENCLOSED TUB HAVING UPPER AND LOWER RACKS BOTH FORMED TO RECEIVE ARTICLES TO BE WASHED; (B) VERTICALLY EXTENDING WATER CONDUIT MOUNTED FOR ROTATION ABOUT ITS AXIS WITHIN SAID TUB; (C) A HOLLOW SUBSTANTIALLY CONICALWATER DISCHARGE DEVICE FIXED TO THE UPPER END OF SAID CONDUIT IN COMMUNICATION THEREWITH BETWEEN SAID RACKS; (D) SAID DEVICE AND SAID CONDUIT BEING FORMED BETWEEN SAID RACKS AS SUBSTANTIALLY CONTINUOUS SURFACES OF REVOLUTION WITHOUT PROJECTIONS, SAID DEVICE HAVING PORT MEANS ARRANGED TO DISCHARGE WATER DURING ROTATION OF SAID DEVICE UPWARDLY AGAINST ALL PARTS OF THE RACK THEREABOVE; (E) THE CONNECTION OF SAID CONDUIT TO SAID DISCHARGE DEVICE BEING FORMED AS A SMOOTHLY CURVED SECTION FLARING OUTWARDLY FROM SAID CONDUIT TO THE BASE OF SAID DISCHARGE DEVICE WHEREBY LIQUID WITHIN SAID CONDUIT REACHES SAID PORT MEANS SUBSTANTIALLY WITHOUT A CHANGE IN THE DIRECTION OF FLOW; AND (F) MEANS BENEATH SAID CONDUIT FOR ROTATING SAID CONDUIT AND SAID DISCHARGE DEVICE; (G) SAID DISCHARGE DEVICE BEING ARRANGED RELATIVE TO THE DIRECTION OF ROTATION SO THAT AS EACH PORT OF THE PORT MEANS PASS A FIXED POINT WITHIN SAID TUB, THE RESPECTIVE PORTS DISCHARGE FROM SUCCESSIVELY HIGHER LEVELS.